What methods do grasses employ to deter herbivores and survive heavy grazing? Select all correct choices
A. Grass shoot apical meristems are located
at the tips of leaves.
B. Grass shoot apical meristems are located
near the base of the plant.
C. Grasses contain silica plates.
D. Grasses contain chitin plates.
B,C
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Because energy transfer is not 100% efficient across trophic levels, a maximum of about _____% of energy and biomass available at one trophic level is available at the next
A. 1 B. 5 C. 10 D. 15 E. 20
Research on HIV vaccines is progressing, but success to date has been limited to vaccines that are of limited
effectiveness against a few strains of the HIV virus. However, flu vaccines are similar in their limitations. Why are ‘limited effectiveness flu vaccines released, but not HIV vaccines? What will be an ideal response?
The statement “animals that live in the desert will produce concentrated urine” is ____
a. an opinion b. a hypothesis c. data d. a variable e. a control group
________ occur(s) at greater frequency than ________ in microbial genomes
a. Recombination / mutations b. Mutations / repairs c. Insertions / deletions d. Deletions / insertions